We report the in situ formation of an ordered equilibrium decagonal Al-Pd-Mn quasicrystal overlayer on the 5-fold symmetric surface of an icosahedral Al-Pd-Mn monograin. The decagonal structure of the epilayer is evidenced by x-ray photoelectron diffraction, low-energy electron diffraction and electron backscatter diffraction. This overlayer is also characterized by a reduced density of states near the Fermi edge as expected for quasicrystals. This is the first time that a millimeter-size surface of the stable decagonal Al-Pd-Mn is obtained, studied and compared to its icosahedral counterpart.
@article{arxiv.cond-mat/0107400,
title = {Formation of a stable deacagonal quasicrystalline Al-Pd-Mn surface layer},
author = {D. Naumovic and P. Aebi and L. Schlapbach and C. Beeli and K. Kunze and T. A. Lograsso and D. W. Delaney},
journal= {arXiv preprint arXiv:cond-mat/0107400},
year = {2009}
}